Phonograph cabinet and horn,申请号US19240713426-传众专利搜索

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发明名称	Phonograph cabinet and horn
摘要
申请公布号	US1799069(A)	申请公布日期	1931.03.31
申请号	US19240713426	申请日期	1924.05.15
申请人	HENRY L. SCHROEDER	发明人	SCHROEDER OTTO C.
分类号	G10K13/00	主分类号	G10K13/00
代理机构		代理人
主权项
地址

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